I have migrated my blog from Angerwhale to Movable Type. In doing so, I also hacked around to get MT to run under Catalyst::Controller::CGIBin. It was (surprisingly) mostly straightforward,
except having to add a new CGI object to lib/MT/Bootstrap.pm
much thanks to confound for helping me work all this out.
except having to add a new CGI object to lib/MT/Bootstrap.pm
much thanks to confound for helping me work all this out.

I gave this a blast as per these instructions, but it doesn't work, catalyst crashed and burned. Have you left a stage or some additional configuration instructions out of your article perhaps?
no, I don't have anything beyond what is pasted here. I have put my controller on github, http://github.com/arcanez/mtcatalyst/